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发明名称
Glimmgleichrichter mit Hohlkathode.
摘要
申请公布号
AT139363(B)
申请公布日期
1934.11.10
申请号
ATD139363
申请日期
1932.12.15
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
JOHANNES NIENHOLD
分类号
主分类号
代理机构
代理人
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